Zang Hai was originally the son of the Imperial Astronomer. However, when he was young, he witnessed the murder of his entire family. Deciding on the path of revenge, Zang Hai withdrew from the scene temporarily and began training himself by learning construction and the art of war. Ten years later, he returned to the capital as an unrecognizable figure and became—through mentoring—the adviser of his enemy, Duke Ping Jin. From the Lord's manor to the court, from an ordinary advisor to becoming the chief minister of the imperial cabinet, Zang Hai struggled in the face of treacherous political plots and battles, finally getting a chance to kill his enemy. However, he soon discovered that not everything was as it appeared and that he had just scratched the surface of something much bigger. Facing an unknown road ahead, Zang Hai teamed up with his beloved friends to overcome and uncover the conspiracy, defending their country.